Constitución LLC / C-Corp
Delaware Division,
conectado.
Delaware Division of Corporations — la jurisdicción corporativa más usada de EE.UU. Constituimos LLC o C-Corp según tu caso.…
500+ companies already trust Aiden Startup
Delaware plans. Desde $32.99/mes.
LLC formation in Delaware with a registered agent in Wilmington. Standard to validate; PRO to actually operate with EIN, banking and full advisory support.
4.9 · Trustpilot
5-10 days formation
No lock-in
Planes Delaware
Standard or PRO.
You decide.
Form your LLC in Delaware with basic state compliance included. Ideal for validating your project before you start operating.
$32.99
/mo
Setup fee $197
The EIN and Mercury operating bank account are included in the PRO plan.
Start with Standard
Includes
- LLC formation with the Delaware Division of Corps
- Registered Agent in Wilmington, DE
- Standard single-member Operating Agreement
- Monthly bookkeeping · Books
- Annual state maintenance with the Delaware Division of Corporations
- Franchise Tax $300/year: calculation and annual reminder (payment due by the client)
- Beneficial Ownership (BOI) compliance · FinCEN
- Chat with an advisor · response <24 business hours
No lock-in · cancel anytime · full details below.
No lock-in
Cancel anytime
Dedicated advisor
Not a call center
Everything included
No surprises at the end
Unified dashboard
Everything in one place
Comparar planes
Standard vs PRO,
Standard vs PRO,
al detalle.
Característica
STANDARD
$32.99/mes
PRO
$99/mes
A. Constitución y setup inicial
Constitución LLC en Delaware
Conversión LLC → C-Corp para raising
Operating Agreement estándar single-member
Operating Agreement custom multi-member
EIN (Employer Identification Number)
Cap table inicial y tracking
Tiempo medio de constitución
5-10 días
5-10 días
B. Compliance estatal anual Delaware
Registered Agent en Wilmington, DE
Mantenimiento del Good Standing certificate
Franchise Tax anual gestionado (Annual Report solo C-Corp)
Cálculo Franchise Tax $300/año
Recordatorio y guía de pago Franchise Tax
Compliance Beneficial Ownership (BOI) FinCEN
C. Banking y pagos
Mercury preaprobado
con EIN propio
EIN incluido
Apoyo en apertura de cuenta
Email
WhatsApp prioritario
Conciliación automática en Books
Multi-divisa USD · EUR · GBP
Integración con Stripe
D. Contabilidad (Books)
Contabilidad mensual automatizada
Categorización con Lunnar AI
Conciliación bancaria automática
Reportes mensuales descargables
Cierre anual de cuentas
E. Asesoría fiscal y legal
Asesor por chat
<24h
<2h
Email directo a asesor asignado
WhatsApp prioritario
Asesoría legal contratos US, NDAs, SAFEs
Calls trimestrales con asesor fiscal US
Elección fiscal S-Corp / C-Corp conversion
Red de fiscalistas españoles para IRPF
Coordinación inicial en caso de inspección IRS
F. Preparación para raising
Cap table tracking en el panel
Data room básico para inversores
SAFEs y term sheets templates
Apoyo en conversión a C-Corp para YC/Techstars
G. Colaboración y equipo
Acceso multi-usuario al panel
Invitación de cofundadores y colaboradores
Permisos finos por sección
Plantillas predefinidas de acceso
Logs de actividad por miembro
H. Integraciones nativas
Stripe (pagos)
Mercury (banking)
Xero (contabilidad importable)
Slack (canal asesor)
API panel Aiden
Lectura
Lectura y escritura
I. Soporte y respuesta
Canal principal de soporte
Chat
WhatsApp + Email + Chat
SLA respuesta laborable
<24h
<2h
Asesor asignado fijo
Calls programadas con asesor
Trimestrales
Horario de soporte
L-V 9-18h CET
L-V 9-20h CET
Servicios marcados con guión están disponibles como complementos bajo presupuesto a través de Aiden Tax Filing y la red de partners de Aiden Startup.
¿Sabías que...?
Lo que otros cobran
Lo que otros cobran
por separado:
Cálculo transparente con setup único y coste recurrente claramente separados. Sin sumas confusas.
Gestoría tradicional
200€/mes recurrente
+
Constitución empresa
500€pago único año 1
+
Dirección fiscal
50€/mes recurrente
+
Banking empresa
30€/mes recurrente
Año 1 · con constitución
(200 + 50 + 30) × 12 + 500
3.860€
Año 2 en adelante · recurrente
(200 + 50 + 30) × 12
3.360€/año
vs
Aiden Startup Standard · $32.99/mes
$32.99
/mes
$32.99 × 12 = $396/year recurring + $197 one-off in year 1
Ahorras ~3.000€ recurrente cada año vs gestoría tradicional
Ver comparativa con Stripe Atlas, Doola, 1st Formations y más
Integraciones nativas
Todo lo que usas,
Todo lo que usas,
ya conectado.
Desliza para ver cada integración. Pulsa + para ver qué hacemos con ella.
Delaware Division,
Federal tax filings
IRS,
conectado.
Internal Revenue Service. La autoridad fiscal federal de EE.UU. Obtenemos el EIN durante la constitución (plan PRO). Las declaraciones anual…
Banking Delaware nativo
Mercury,
conectado.
Banking moderno para startups americanas. Preaprobado para sociedades Delaware constituidas con Aiden — apertura en 5-14 días.…
Cobros automáticos
Stripe,
conectado.
Tu cuenta Stripe integrada con Books. Ideal si tu empresa Delaware factura globalmente en USD o EUR.…
Contabilidad importable
Xero,
conectado.
Si ya usas Xero, podemos migrar tus libros o sincronizar reportes. Alternativa cuando vienes de otro sistema.…
Alertas de asesor
Slack,
conectado.
Canal privado con tu asesor Delaware en plan PRO. También alertas automáticas de deadlines IRS y Delaware.…
In the words of our founders
Situations we solve every week for founders coming from Stripe Atlas, Firstbase, or a traditional accounting firm.
MG
María García 🇪🇸
Founder · Acme SaaS
I used to pay $500 with Stripe Atlas. Now I pay $21.99 a month with Aiden and I have a Spanish-speaking advisor. Total game changer.
–480$
vs Stripe Atlas year 1
PD
Pablo Domínguez 🇪🇸
CEO · Loop Studio
In 36 hours I had my UK Limited up and running, a bank account, and my first invoice issued from Aiden Books. It doesn't get any faster.
36h
de cero a primera factura
LB
Lucía Bravo 🇪🇸
Co-founder · Northpath
Lunnar AI saves me hours every week categorizing invoices. At year-end close, all the accounts were ready in 4 clicks.
+12h
ahorradas al mes
DC
Diego Castaño 🇲🇽
Founder · Pixelroom
I migrated my LLC from Delaware where another company managed it. Aiden rescued it, cleaned it up, and keeps it running for a lot less.
–62%
sobre coste anterior
CF
Carla Ferra 🇪🇸
Solopreneur · Ferra Design
I didn't want to set up an SL in Spain with a sole trader accountant at €300/month. A UK Limited with Aiden costs me €20 and I get more tools.
–280€
/mes vs SL España
AM
Andrés Mejía 🇨🇴
CTO · Vortex Labs
My advisor replies in under an hour. I've asked legal questions that would have cost me €200 an hour elsewhere.
<1h
tiempo medio respuesta
SB
Sofía Belmar 🇪🇸
Founder · Belmar Studio
Aiden Pay lets me charge clients through Stripe with no markup. Stripe Atlas charged me an extra fee on top of Stripe's own fee.
0%
Aiden fee
JA
Jorge Aguilar 🇦🇷
Founder · Northland Co.
Forming a company from Argentina seemed impossible. With Aiden I was operating in the UK in under a week, without flying to London.
5 days
from Argentina
Illustrative stories based on situations our clients commonly face. Names, companies and figures are fictional.
500+ companies already trust Aiden
Encrypted data AES-256
Compliant with GDPR
Payments by Stripe
We file with Companies House
Support in Spanish
Cancel whenever want
Add-ons
Add-on services available
Annual or specialised services not included in any monthly plan. We handle these as add-ons whenever you need them.
Annual · IRS
Aiden Tax Filing
Annual IRS information returns for non-resident LLCs and C-Corps.
- Form 5472 (foreign-owned single-member LLC)
- Form 1065 (multi-member partnership LLC)
- Form 1120 (C-Corps with profits)
From €299/year per LLC
Get Aiden Tax Filing
Quote-based
Spain Tax Advisory
Support for your personal tax return in Spain, compatible with your US LLC.
- IRPF return with a US LLC
- Modelo 720 if applicable
- Network of tax advisors in Spain
Personalised quote
Request a quote
Quote-based
Advanced IRS management
Specialised response when the IRS contacts you or opens a case.
- Response to IRS notices
- Federal audits
- Penalty abatement negotiation
Personalised quote
Request a quote
Still deciding on a jurisdiction?
Compara Delaware
con Reino Unido.
Differences in taxation, formation time, banking, and ideal use cases for each jurisdiction.
Comparing Aiden to other options?
We look at the real 3-year prices of the leading competitors. No marketing, no catch.
S
Stripe Atlas
$8.890 over 3 years with external compliance
Save ~$5.300 with AidenF
Firstbase
$7.809 over 3 years with required add-ons
Save ~$4.200 with AidenD
Doola
$6.474 over 3 years with Total Compliance
Save ~$2.900 with AidenC
Clerky
$9.196 over 3 years with external CPA
Save ~$5.600 with AidenComparisons with figures verified in May 2026. See all comparisons.
Frequently asked questions
About plans
About plans
Delaware.
Why Delaware if I live in Spain?
Delaware is the most widely used corporate jurisdiction in the US thanks to its business-friendly laws, its specialised court (Court of Chancery), and its services infrastructure. American VCs almost always invest in Delaware C-Corps. If your product is global or your main market is the US, it makes a lot of sense.
LLC or C-Corp, which one should I choose?
LLC: simpler, pass-through taxation (profits are taxed on your personal return), good for bootstrapping and consulting. C-Corp: the standard structure for raising VC funding, allows preferred shares and ESOPs, double taxation. With Standard we form an LLC (no EIN, ideal for validating before you operate); to get the EIN, an operating bank account, or convert to a C-Corp (required for YC, Techstars, and many VCs), move up to the PRO plan.
Why is the EIN only included in the PRO plan?
The EIN (Employer Identification Number) is your LLC's federal tax ID with the IRS, needed to open a Mercury account, invoice clients, and integrate Stripe. In the PRO plan we handle it as part of the full operating formation process. Standard only covers the Delaware state formation; if you need the EIN you can hire it separately or move up to PRO.
Is Teams included in PRO Delaware, or is it a separate cost?
Teams comes included in PRO at no extra cost, just like in the UK. Invite as many members as you need (co-founders, accountant, assistant, advisors) with custom permissions. Only the admin pays the PRO subscription. If you're on the Standard LLC plan, this feature isn't available, and you'd need to move up to PRO to use it.
Do I need to travel to the US for the process?
No. Everything is done 100% remotely, including opening your Mercury Bank account. No physical presence is required for the briefing call or for signing documents.
What is a registered agent, and why is it mandatory?
It's a person or company with a physical address in Delaware that receives legal communications on behalf of your company (lawsuits, state notices, etc.). It's a legal requirement in Delaware. It's included at no extra cost in every plan.
How do taxes work for my Delaware LLC if I live in Spain?
Pagas Franchise Tax de $300/year fijo (lo calculamos y te recordamos cuándo y cómo pagarlo). Las declaraciones informativas anuales del IRS (Form 5472, Form 1065, Form 1120) se gestionan como servicio complementario a través de <a href="https://chatting.page/8qifzzxzzjzgbdpwsva00ura1zwnjn8a">Aiden Tax Filing</a>. Tu asesor español declara los beneficios en tu IRPF.
What is Delaware's Franchise Tax, and when is it due?
Es un impuesto fijo anual de $300 para LLCs (independiente de beneficio). Vence antes del 1 de junio cada año. Para C-Corps, se calcula con fórmula diferente basada en authorized shares. <strong>Lo calculamos y te recordamos cuándo y cómo pagarlo</strong> — la tasa oficial ($300 o el cálculo C-Corp) <strong>la abonas tú directamente</strong> a Delaware Division of Corporations. No es una cuota de Aiden, es un impuesto estatal obligatorio.
Is a Mercury account like a traditional bank?
Mercury is a regulated American fintech specialised in startups, with insured accounts (FDIC partner banks). It works better than a traditional bank for international startups: remote account opening, multi-currency, API integrations, human support. Thousands of YC companies use it.
Can I convert my LLC to a C-Corp when I'm ready to raise?
Sí. Es un proceso llamado "Delaware conversion" que estructuramos en plan PRO. Toma 4-8 semanas e implica disolver la LLC en el libro anterior y continuidad en la nueva C-Corp. Lo hacemos antes de la ronda seed típicamente.
What annual IRS returns do I have to file, and are they included?
Toda LLC en Delaware propiedad de no residentes en EE.UU. tiene obligación anual ante el IRS:<br><br>• <strong>LLC single-member foreign-owned</strong>: Form 5472 + Form 1120 pro forma (deadline 15 de abril). Multa por no presentar: 25.000 USD.<br>• <strong>LLC multi-member partnership</strong>: Form 1065 + Schedule K-1 por socio (deadline 15 de marzo). Multa: 220 USD/mes por socio.<br>• <strong>C-Corp con beneficios</strong>: Form 1120 con tax liability (deadline 15 de abril).<br><br>Estos formularios NO están incluidos en los planes mensuales por su carácter anual y especializado (firma bajo penalty of perjury, gestión de comunicaciones con el IRS). Se gestionan a través de <a href="https://chatting.page/8qifzzxzzjzgbdpwsva00ura1zwnjn8a">Aiden Tax Filing</a> desde 299€/year por LLC.
Start today.
Start operating tomorrow.
20 minutes of free briefing. We get your company formation under way in Delaware that same day.